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脑血流图(Rheoencephalography)是在导入徽弱的高频电流后描记颅内血流随着脉搏搏动时的电阻抗改变(心室收缩时电阻抗变小,舒张时电阻抗增大),从而反映脑血流供应情况和血管壁弹性状态的方法。50年代开始用于临床。
Rheoencephalography is the introduction of weak high-frequency current into the intracranial blood flow traced pulse pulsation when the electrical impedance changes (ventricular contraction when electrical impedance smaller, electrical impedance increases when diastolic), reflecting Cerebral blood flow and vascular wall elasticity of the state of the method. 50’s for clinical use.